* {
  margin: 0;
  padding: 0;
}
body {
  height: 100vh;
  background-color: rgb(0, 3, 65);
}
h4 {
  margin: 6px 0;
  color: #fff;
}
.number {
  color: rgb(241, 144, 70);
}
.number-container {
  cursor: default;
}
.number-container .number-container-item {
  margin: 0 2px;
  display: inline-block;
  height: 50px;
  width: 30px;
  font-size: 30px;
  border: 1px solid rgba(221, 221, 221, 0.4);
  overflow: hidden;
  position: relative;
  background-color: rgba(0, 0, 0, 0.2);
}
.number-container .number-container-item > span {
  position: absolute;
  display: inline-block;
  writing-mode: vertical-lr;
  text-orientation: upright;
  top: 10px;
  left: 50%;
  transition: transform 500ms ease-in-out;
  transform: translate(-50%, 0);
  letter-spacing: 10px;
}
